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WO2017168747A1 - Tuyau et échangeur de chaleur pourvu dudit tuyau - Google Patents

Tuyau et échangeur de chaleur pourvu dudit tuyau Download PDF

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Publication number
WO2017168747A1
WO2017168747A1 PCT/JP2016/060900 JP2016060900W WO2017168747A1 WO 2017168747 A1 WO2017168747 A1 WO 2017168747A1 JP 2016060900 W JP2016060900 W JP 2016060900W WO 2017168747 A1 WO2017168747 A1 WO 2017168747A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
brazing material
enlarged diameter
brazing
heat exchanger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/060900
Other languages
English (en)
Japanese (ja)
Inventor
崇志 中島
祥彦 佐竹
亮平 川端
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to PCT/JP2016/060900 priority Critical patent/WO2017168747A1/fr
Priority to JP2018508332A priority patent/JP6545364B2/ja
Publication of WO2017168747A1 publication Critical patent/WO2017168747A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/14—Soldering, e.g. brazing, or unsoldering specially adapted for soldering seams
    • B23K1/18—Soldering, e.g. brazing, or unsoldering specially adapted for soldering seams circumferential seams, e.g. of shells
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints
    • F16L13/08—Soldered joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular

Definitions

  • the present invention relates to a pipe joined to a different pipe using brazing material and a heat exchanger provided with the pipe.
  • the present invention has been made in view of the above problems, and an object of the present invention is to obtain a pipe capable of easily assembling a pipe when the pipes are joined using a brazing material. .
  • the pipe according to the present invention has a main pipe part, a fitting part that fits different pipes inside, and a diameter-expanding part that has an inner cross-sectional area larger than the inner cross-sectional area of the main pipe part and the fitting part.
  • the fitting part is provided between the main pipe part and the enlarged diameter part.
  • the pipe according to the present invention has the enlarged diameter portion for storing the brazing material, the brazing material can be arranged at a predetermined position before inserting different pipes, and the pipes can be assembled easily.
  • FIG. 1 is a diagram showing a configuration of a heat exchanger according to the present invention.
  • the heat exchanger 100 includes a first pipe 1, a fin portion 2, a second pipe 3, a U bend 4, and the like.
  • the 1st piping 1 flows heat media, such as water and a refrigerant
  • FIG. 2 is a perspective view showing the first pipe 1 according to Embodiment 1 of the present invention.
  • the first pipe 1 is a metal pipe made of an aluminum alloy having a flat shape with a long side portion 1a having a straight section and a short side portion 1b having a curved shape such as a semicircular shape.
  • the first pipe 1 is produced by bending a single straight pipe having flat pipe ports 11 at both ends into a U shape by bending it 180 degrees near the center. Therefore, the first pipe 1 has a bend portion 12.
  • the fin part 2 includes a plurality of fins 21 arranged in parallel.
  • FIG. 3 is a schematic diagram showing the form of the fins 21.
  • the fin 21 has a plurality of openings 22 into which the first pipe 1 is inserted.
  • the opening 22 has a long side portion 22 a corresponding to the long side portion 1 a of the first pipe 1 and a short side portion 22 b corresponding to the short side portion 1 b of the first pipe 1.
  • a locking portion may be provided around the opening 22 so that the first pipe 1 can be engaged and fixed.
  • the first pipe 1 is joined to the fin portion 2 composed of a plurality of fins 21 to constitute a heat exchanger core 101.
  • the heat exchanger core 101 is inserted into the plurality of first pipes 1 arranged parallel to the direction orthogonal to the flow direction of the heat medium one by one or a plurality of fins 21 at a time. It is produced by joining. Moreover, you may produce the heat exchanger core 101 by inserting the 1st piping 1 in the several fin 21 arrange
  • the heat exchanger 100 is configured by inserting the second pipe 3 or the U bend 4 into the plurality of pipe ports 11 of the heat exchanger core 101.
  • the second pipe 3 acts as a pipe for connecting to the outside
  • the U bend 4 acts as a pipe for connecting the adjacent first pipes 1.
  • the cross sections of the second pipe 3 and the U bend are flat like the first pipe 1.
  • FIG. 4 is a cross-sectional view showing a joint structure between pipes before brazing according to Embodiment 1 of the present invention.
  • the first pipe 1 is assembled so that the second pipe 3 is inserted inside the first pipe 1, and the first pipe 1 and the second pipe 3 are joined by brazing.
  • FIG. 4 although the joining structure of the 1st piping 1 and the 2nd piping 3 was shown, the joining structure of the 1st piping 1 and U bend 4 is also the same.
  • the first pipe 1 has a main pipe part 13 for flowing a heat medium therein, a fitting part 14 for fitting the second pipe 3 inside, and a diameter-expanding part 15 for storing the brazing material 30.
  • the main pipe part 13 acts as a flow path through which a heat medium such as refrigerant or water flows. Further, the main pipe portion 13 is inserted into the opening portion 22 of the fin 21 in order to join the first pipe 1 and the fin portion 2.
  • the fitting portion 14 is provided between the main pipe portion 13 and the diameter-expanded portion 15 and fits the second pipe 3 inserted into the first pipe 1 inside. Therefore, the inner cross-sectional area of the fitting portion 14 is larger than the inner cross-sectional area of the main pipe portion 13.
  • the enlarged diameter portion 15 is provided at the end of the first pipe 1. Inside the enlarged diameter portion 15, a brazing material 30 for joining the first pipe 1 and the second pipe 3 is stored. The inner cross-sectional area of the enlarged diameter portion 15 is formed larger than the inner cross-sectional area of the fitting portion 14.
  • the brazing material 30 has an action of joining the first pipe 1 and the second pipe 3 by brazing.
  • the brazing material 30 is stored in a space between the enlarged diameter portion 15 and the second pipe 3. Therefore, the brazing filler metal 30 has a ring-shaped shape that is a flat shape similar in cross section to the first pipe 1. Further, the brazing material 30 is formed smaller than the inner diameter of the enlarged diameter portion 15 and larger than the inner diameter of the fitting portion 14 so as to be stored inside the enlarged diameter portion 15.
  • the brazing material 30 is made of an aluminum-silicon type material such as BA4047, which has a lower melting point than aluminum.
  • a clad layer 31 made of a material having a melting point lower than the melting point of the brazing material 30 may be formed on the inner surface of the first pipe 1. Since the clad layer 31 has a lower melting point, the clad layer 31 is melted before the brazing material 30 when brazing, so that the brazing material 30 is pulled by the clad layer 31. Therefore, it is possible to prevent the brazing material of the brazing material 30 from flowing out of the pipe and causing a brazing failure.
  • the clad layer 31 need not be formed on the entire inner surface of the first pipe 1, but only on a part of the inner surface of the first pipe 1, for example, the inner surfaces of the fitting portion 14 and the enlarged diameter portion 15. May be.
  • the clad layer 31 is made of, for example, a material obtained by adding several percent of zinc to BA40407 used for the brazing material 30.
  • FIG. 5 is a flowchart for explaining a pipe joining process.
  • the heat exchanger core 101 is installed so that the main pipe portion 13 of the first pipe 1 is horizontal (S1).
  • the brazing filler metal 30 is attached to the inside of the enlarged diameter portion 15 of the first pipe 1 (S2).
  • workability at the time of pipe assembly can be improved.
  • there is no need for parts or configurations for fixing the brazing filler metal 30 at a predetermined position an increase in manufacturing cost can be suppressed.
  • the entire heat exchanger 100 is put into an electric furnace and heated. (S4).
  • the atmosphere in the furnace is filled with an inert gas or a reducing gas.
  • melting of the brazing material begins.
  • the cladding layer 31 is melted first.
  • the melt of the clad layer 31 reaches the gap between the first pipe 1 and the second pipe 3 and the surface of the brazing material 30.
  • FIG. 6 is a cross-sectional view showing a joint structure between pipes in a state where joining by brazing is completed.
  • the brazing filler metal 30 can be disposed at a predetermined position before the second pipe 3 is inserted.
  • the pipes can be assembled together. Furthermore, since the position of the brazing material 30 is less likely to be shifted during the conveying operation in the brazing process, and the brazing material is easily filled in the place where the brazing material should be originally filled, a highly reliable joint can be obtained.
  • the second pipe 3 is not specially processed. Therefore, since it is not necessary to change the manufacturing process of the second pipe 3, an increase in manufacturing cost can be suppressed.
  • FIG. FIG. 7 is a cross-sectional view showing a joint structure between pipes before brazing according to Embodiment 2 of the present invention.
  • the second embodiment is different from the first embodiment in that it has a protrusion 16 projecting inwardly at the end of the first pipe 1, but is otherwise the same as the first embodiment.
  • the protrusion 16 has a shape protruding inward and is formed at the end of the enlarged diameter portion 15 of the first pipe 1. With this configuration, the protrusion 16 has an action of suppressing the brazing material 30 so that the brazing material 30 stored inside the enlarged diameter portion 15 of the first pipe 1 does not shift due to an impact or vibration in an assembly process or a brazing process. .
  • FIG. 8 to 10 are perspective views showing the first piping according to Embodiment 2 of the present invention.
  • FIG. 8 shows the first pipe 1 in which the long side portion of the flat-shaped enlarged diameter portion 15 is impacted from the outside, and the protrusion 16 a is formed inside the enlarged diameter portion 15.
  • the protrusion 16a is formed in each of the middle portions of the two long side portions of the enlarged diameter portion 15.
  • FIG. 8 shows a configuration in which two protrusions 16a are formed on the long side so as to be symmetrical, the present invention is not limited to this, and one or three or more protrusions 16a are formed at an arbitrary position. You may do it.
  • FIG. 9 shows the first pipe 1 in which the protrusion 16 b is disposed inside the enlarged diameter portion 15.
  • the first pipe 1 in FIG. 9 is different from the first pipe 1 in FIG. 8 in that a protrusion 16 b is separately provided inside the enlarged diameter portion 15.
  • FIG. 10 shows the first pipe 1 in which one protrusion 16c wider than the protrusion 16b of FIG. By forming such a projection 16c, it is easy to attach the brazing material 30 to the first pipe 1, and it is possible to prevent the brazing material 30 from falling off due to impact or vibration in the assembly process or brazing process.
  • the height of the protrusion 16 is preferably 0.30 mm to 0.60 mm. If it is lower than 0.30 mm, there is a risk that the brazing filler metal 30 will fall off from the enlarged diameter portion 15, and if it is higher than 0.60 mm, it will be difficult to attach the brazing filler metal 30 to the enlarged diameter portion 15.
  • the present invention is not limited to this, and the protrusion 16 prevents the brazing material 30 from falling off from the enlarged diameter portion 15 of the first pipe 1. Any structure or shape that suppresses the brazing material 30 may be used.
  • FIG. 11 is a perspective view showing a first pipe according to Embodiment 3 of the present invention.
  • the third embodiment is different from the first embodiment in that the friction portion 17 is provided on the inner surface of the diameter-enlarged portion 15 of the first pipe 1, but is otherwise the same as the first embodiment.
  • the friction portion 17 is formed on the inner surface of the enlarged diameter portion 15 and has an action of preventing the brazing material 30 from shifting due to friction by contacting the brazing material 30 stored inside.
  • the friction part 17 consists of a plurality of ridges formed along the direction in which the heat medium flows, for example, as shown in FIG.
  • the inner dimension of the friction portion 17 slightly smaller than the outer diameter of the brazing material 30 that stores the friction part 17 on the inside, it is possible to more effectively prevent the brazing material 30 from falling off or being displaced.
  • the friction part 17 should just be the structure and shape which prevent the brazing
  • the friction part 17 may be formed by making the inner surface of the enlarged diameter part 15 rough.
  • each of the first pipe 1, the second pipe 3, the U bend 4, the main pipe part 13, the fitting part 14, and the enlarged diameter part 15 has a flat shape. It is not limited and may be circular or elliptical.
  • the material of the first pipe 1 is an aluminum alloy.
  • the material is not limited to this, and may be a material having good thermal conductivity, such as copper or stainless steel.
  • the brazing material 30 has a ring shape that has a flat shape similar to that of the first pipe 1, but the shape of the brazing material 30 is not limited thereto. .
  • the brazing material 30 may be stored inside the enlarged diameter portion 15 of the first pipe 1 and used for joining the pipes by brazing. For example, even if the ring shape is partially cut off good.
  • the brazing material 30 may be divided into two or more.
  • the above-described embodiment is used for an apparatus having a pipe for flowing water or a refrigerant.
  • a heat source device having a heat exchanger, an air conditioner equipped with the heat source device, a showcase, a refrigerator, a refrigerator, and the like.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

Selon la présente invention, un premier tuyau (1) a : une partie (13) principale de tuyau ; une partie (14) de raccordement qui s'ajuste sur un second tuyau (3) ; et une partie (15) dont le diamètre est agrandi qui a une aire de section transversale interne plus grande que les surfaces de section transversale interne de la partie (13) principale de tuyau et de la partie (14) d'ajustement, la partie (14) d'ajustement étant disposée entre la partie (13) principale de tuyau et la partie (15) dont le diamètre est agrandi.
PCT/JP2016/060900 2016-04-01 2016-04-01 Tuyau et échangeur de chaleur pourvu dudit tuyau Ceased WO2017168747A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2016/060900 WO2017168747A1 (fr) 2016-04-01 2016-04-01 Tuyau et échangeur de chaleur pourvu dudit tuyau
JP2018508332A JP6545364B2 (ja) 2016-04-01 2016-04-01 配管及びその配管を備えた熱交換器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/060900 WO2017168747A1 (fr) 2016-04-01 2016-04-01 Tuyau et échangeur de chaleur pourvu dudit tuyau

Publications (1)

Publication Number Publication Date
WO2017168747A1 true WO2017168747A1 (fr) 2017-10-05

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PCT/JP2016/060900 Ceased WO2017168747A1 (fr) 2016-04-01 2016-04-01 Tuyau et échangeur de chaleur pourvu dudit tuyau

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WO (1) WO2017168747A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170114932A1 (en) * 2014-09-25 2017-04-27 Mitsubishi Electric Corporation Refrigerant pipe, method of manufacturing the refrigerant pipe, and heat exchanger including the refrigerant pipe
JPWO2023223831A1 (fr) * 2022-05-16 2023-11-23

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS542166B2 (fr) * 1974-12-27 1979-02-03
JPS5426218B2 (fr) * 1975-10-31 1979-09-03
JPS5775281A (en) * 1980-10-30 1982-05-11 Mitsubishi Heavy Ind Ltd Soldering method of pipe joint
JPH0252167A (ja) * 1988-08-16 1990-02-21 Showa Alum Corp 金属材のろう付方法
JPH0242383Y2 (fr) * 1984-03-26 1990-11-13
JPH0463276B2 (fr) * 1983-10-03 1992-10-09 Mitsubishi Aluminium
JP2008212949A (ja) * 2007-02-28 2008-09-18 Calsonic Kansei Corp ロウ付け配管
JP2012145177A (ja) * 2011-01-13 2012-08-02 Panasonic Corp アルミニウム管継手
JP2013142454A (ja) * 2012-01-12 2013-07-22 Mitsubishi Electric Corp 管継手、熱交換器、及び熱交換器の製造方法
JP2014233725A (ja) * 2013-05-31 2014-12-15 三菱電機株式会社 熱交換器の製造方法および熱交換器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS513417Y1 (fr) * 1968-06-19 1976-01-31
JP4236185B2 (ja) * 2004-04-27 2009-03-11 住友軽金属工業株式会社 自動車熱交換器用アルミニウム合金クラッド材
SE533223C2 (sv) * 2008-10-08 2010-07-27 Sapa Heat Transfer Ab Metod för formning av header-tank tillverkad i aluminium
JP2010221256A (ja) * 2009-03-24 2010-10-07 Furukawa-Sky Aluminum Corp 管材の接合方法
JP5977640B2 (ja) * 2012-10-17 2016-08-24 株式会社Uacj アルミニウム管の接合体
GB2545109B (en) * 2014-09-25 2020-09-30 Mitsubishi Electric Corp Refrigerant pipe, method of manufacturing the refrigerant pipe, and heat exchanger including the refrigerant pipe
JP2016138731A (ja) * 2015-01-29 2016-08-04 三菱電機株式会社 熱交換器

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS542166B2 (fr) * 1974-12-27 1979-02-03
JPS5426218B2 (fr) * 1975-10-31 1979-09-03
JPS5775281A (en) * 1980-10-30 1982-05-11 Mitsubishi Heavy Ind Ltd Soldering method of pipe joint
JPH0463276B2 (fr) * 1983-10-03 1992-10-09 Mitsubishi Aluminium
JPH0242383Y2 (fr) * 1984-03-26 1990-11-13
JPH0252167A (ja) * 1988-08-16 1990-02-21 Showa Alum Corp 金属材のろう付方法
JP2008212949A (ja) * 2007-02-28 2008-09-18 Calsonic Kansei Corp ロウ付け配管
JP2012145177A (ja) * 2011-01-13 2012-08-02 Panasonic Corp アルミニウム管継手
JP2013142454A (ja) * 2012-01-12 2013-07-22 Mitsubishi Electric Corp 管継手、熱交換器、及び熱交換器の製造方法
JP2014233725A (ja) * 2013-05-31 2014-12-15 三菱電機株式会社 熱交換器の製造方法および熱交換器

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170114932A1 (en) * 2014-09-25 2017-04-27 Mitsubishi Electric Corporation Refrigerant pipe, method of manufacturing the refrigerant pipe, and heat exchanger including the refrigerant pipe
US10697568B2 (en) * 2014-09-25 2020-06-30 Mitsubishi Electric Corporation Refrigerant pipe, method of manufacturing the refrigerant pipe, and heat exchanger including the refrigerant pipe
JPWO2023223831A1 (fr) * 2022-05-16 2023-11-23
JP7749828B2 (ja) 2022-05-16 2025-10-06 三菱電機株式会社 伝熱管、熱交換器、拡管工具、拡管装置、伝熱管と管の接続方法および熱交換器の製造方法

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Publication number Publication date
JP6545364B2 (ja) 2019-07-17
JPWO2017168747A1 (ja) 2018-11-08

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